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Finding the Fourth Proportional to 355,963.95, 533,932.11 and 131,227.20

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Solution

The fourth proportional to 355,963.95, 533,932.11 and 131,227.20 is: 196,835.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,963.95 : 533,932.11 = 131,227.20 : x
  2. Step 2: Convert to fraction form
    355,963.95/533,932.11 = 131,227.20/x
  3. Step 3: Cross multiply
    355,963.95x = 533,932.11 × 131,227.20
  4. Step 4: Simplify right side
    355,963.95x = 70,066,415,785.39
  5. Step 5: Solve for x
    x = 70,066,415,785.39/355,963.95
  6. Step 6: Final answer
    x = 196,835.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.